Naber, T., Blackwell, A., & Johnstone, M. (2003). English knowhow. Oxford University Press.
Cita Chicago (17th ed.)Naber, Therese, Angela Blackwell, i Michelle Johnstone. English Knowhow. New York: Oxford University Press, 2003.
Cita MLA (8th ed.)Naber, Therese, et al. English Knowhow. Oxford University Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.